Means for manufacturing paper, board, and pulp.



W. E. SHEEHAN.

MEANS FOR MANUFACTURING PAPER, BOARD, AND PULP. APPLICATION FILED AFR.25,1906.

902, 178, Patented Oct. 27, 1908.

2 SHEETS-SHEET 1.

I I a lnven turlnjltngsse WMQSMM W. E, SHEEHAN. MEANS FOR MANUFACTURINGPAPER, BOARD, AND PULP.

APPLICATION FILED APR, 25,1906.

Patented Oct. 27, 1908.

2 SHEETS-SHEET 2.

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Specification of Letter! Patent.

Patented Oct. 27, 1908.

Applicaflon fled April 116, 1006. lurid No. 818W.

To all whom it may concern:

Be it known that I, WILLIAM E. SHEErmN, a citizen of the United States,residing at the city of Albany, in the county of Albany and State of NewYork, have invented certain new and useful Improvements in Means forManufacturing Paper, Board, and Pulp, of which the following is aspecification;

My invention relates to the manufacture of paper, aper or other boardand various inds 0 manufactured pulp, and the object of my invention isto provlde a machine for the manufacture of paper, paper board, paperpul asbestos ulp, cement &c., made upon fe t, and in t e making of whichthe stock does not at any time come in contact with wire.

I accomplish this object by means of the mechanism illustrated in theaccompanying drawings, in which:

Figure 1 is a side elevation of a machine for carrying out my process.Fig. 2 is a perspective view of a trough and aper making felt with partsbroken away. ig. 3 is a detail elevation, with parts broken away,showing a means for agitating the fingers in the trough. Fig. 4 is anend elevation of Fig. 3. Fig. 5 is a side elevation of the making feltand a series of troughs, with parts broken away.

Similar letters refer to similar partsv throughout the several views.

Heretofore there have, generally speaking, been two distinct methods andtypes of machines for manufacturin paper and pulp, one known as theFourdrlnier and the other the cylinder. In the Fourdrinier method,techmcally speaking, the paper or pulp is made on a wire cloth, aportion of which is mounted on a shake frame, whereby the paper stock orpulp is received by the wire cloth and by the action of the shake frameis agitated, causing the particles of fiber contained in and composingthe stock to assume a mixed position in relation to each other,extending at various angles to each other, whereby the texture is madestrong and tough, very different from that which is made in such a wathat the fiber arranges itself in the same irection.

An objection to the'Fourdrinier paper and method of producing it, isthat it is almost impossible to obliterate the wire marks,

since, it is jnecessary to exert a strong suctlon, resultlng 1n a verystrong adhesion to the wire cloth, in order to remove sufficient waterfrom the paper stock to prevent it from sqhiash when operated on by thecouch ro s, an this engagement of the pulp or pa-' per stock with thewire, under the influence of the said stro suction, marks the paper tosuch a degree t at, although many devices have been em loyed forremoving them, they are, neverthe ess, highly objectionable in certainfine papers, especially those used for the reproduction of pictures.Another very great objection to the Fourdrinier method of making paperis that it is so expensive, since the wire cloth is short lived andcostly.

In the cylinder type an endless felt is employed and pul or paper stockis icked by the felt from t e wire cloth peri eral surfaces of a seriesof cylinder mol s. One of the principal objections to this type of papermanufacture, is that the fiber arranges itself parallel to each other,and the aper has ittle or no tenacity, and is worthless in any use thatrequires strength.

Another objection to thecylinder type of machine is the ex ense of thewire cloth apron and the cy inder molds, which are used for conveyingthe stock to the felt. The cylinder surfaces, made up of wire cloth,wear out very quickly and cost a great deal of money.

By my machine I-entirely do away with the use of wire cloth.

It is necessary to cause the fiber in the pa er stock to becomemixed andbe retained in the mixed position onthe making-portion of the endlessfelt, in order to obtain the tenacity required for stron paper, of theFourdrinier type. make the paper entirel free from all inequalities,such as have eretofore been impressed therein by wire cloth, and it ispractically and commercially necessary that the aper should be madeeconomically. Thereore I agitate the paper stock or pulp before it isdelivered to the making-portion of the traveling cloth apron or frame,and provide a means for causing the agitated mass of pulp to be retainedin the osition in which it engages the traveling elt, until the water issufficiently abstracted therefrom, and it has passed under the couchrolls and retains a consistency which prevents any possibility ofassuming a weakened condition.

Referring to the drawings, the pulp entering the flow-box, A, throughthe pipes, B, is

It is aso advisable to Ill discharged into the trough, C,- under theinfiuence of a pump, not shown, and within the trough, O, which ma beplaced at any suitable angle to the fe t, I preferabl arrange one ormore ates, c, c, for regu ating .the fiow of the puIp through the tionh.

For the purpose of agitating t e pulp in its passage through the troughI preferably arrange a series of a itators, preferably either needles orfingers, I), which may be secured to a bar, E, extending across thetrough from one side to the other, as shown in Fig. 2, and havin at oneend the pins, F, between which revolves the wheel, G, havin cam-shapedsurfaces as shown in Fig. 3, an by means of which the bar, E, is movedtransversely during the rotation of the wheel, G. I do not however,limit myself to the arrangement of pins, F and wheel, G, forreciprocating thebar, E, since any suitable device may be used for thispurpose. The trough may be oscillated by 500111111" the bar .3 to thetrough and the wheel (3 acting thereon will agitate the trough on thehinges, a, a, or it may be oscillated in any suitable manner.

I have. shown in Fig. 2 two bars, E, each carrying a seriesof fingers orneedles, D, in the trough, C, one of said bars being located near thedischarge end of the trough, the other about midway between theends ofthe trough. I do not limit myself to the number of the bars carrying thefingers or needles, D, or their position in relation to the trough. Itis, however, advisable that the fingers, D, should not come in contactwith the felt or endless woven cloth, E, upon which the pulp orpaperstock is delivered from the trough, but it is preferable to arrange ameans for agitating the pul at the time of its delivery to the fe t, E,an therefore, there should be some agitating device, such as thefingers, D, on the reciprocating bar, E, arranged to o erate the pulimmediately before, or at t 1e time of its elivery upon the felt, or thetrough may be agitated.

In order that the pulp may be retained on the felt, E, in the osition inwhich it is brou ht in contact t ierewith, I lace immediate y beneaththe portion of t 1e felt upon which the pulp is delivered from thetrough a suction-box, F, by means of which strong suction is exerted uon the under side of the traveling felt, E. I place another suctionbox,F, preferably separated a short distance from the first suction box, F,beneath thefelt, E, in order that the action on the felt by suction maybe such. that the particles of the fiber in the paper stock or pul maybe caused to adhere firmly to the fe t immediately upon the delivery ofthe pulp to the felt.

I do not limit myself to the number of suction boxes employed, it beinunderstood that a sufiicient number are to e used to effactually holdthe fiber in the pulp in osi- Eon on the felt and to draw the water tereom.

The fibers of the woven material forming the endless apron are sointermingled that they act as a filter or strainer, preventing any lossof the fiber orfinely powdered materials com osing the substance to beoperated upon t ough the mesh when subjected to suction or pressure, butpermitting the water to be drawn therefrom. 7

Beneath the traveling felt are laced the rollers, G, mounted in the usuamanner, and above the felt is a dandy roll, 11, mounted in the usualway.

I have shown the deckles, J, Fig. 1, mounted in the usual manner and forthe usual purpose. I do not limit myself to the extent or position ofthe deckles, as they may, if desired, be made shorter or mounted in anymanner.

I have shown the traveling felt, E, extending over the breast roller, K,and between the couch rolls, L, L, from which it passes over a series ofrollers, M, M, mounted in any convenient manner, as shown in Fig. 1.

My machine may also be used for manufacturingpulp or materialof pulpconsistency, such as asbestos, cement and other material used in themanufacture of board of various qualities.

It is not necessary whenmanufacturing pulp to agitate the stock, and itis usual to use cylinder machines rather than the Fourdrinier type whenmaking manufactured pulp. My machine performs all of the functions ofthe cylinder machine and does away with the cylinder molds, making amore economical operation. I want it understood that my machine is to beused not only for the manufacture of paper and paper board, but also inthe manufacture of asbestos board and pulp to be used for themanufacture of aper or paper board and viscous semi-liquid mass to beused in manufacturingasbestos board or any other composition orsubstance capable of being manufactured or formed on atraveling felt,and where I refer herein to pa er or paper board, I intend to beunderstoo as meaning any pul or material whichmay be manufacture on amachine constructed and operated as described, and where I refer hereinto the ulp delivered on to the traveling felt or cloth I-intend to beunderstood as meaning any liquid or semi-liquid substance which mai'y beused. V

n Fi 5 I show a series of troughs, C, C, and C, for the purpose ofdelivering, at different intervals, ulp to the aper-makingfelt, thuswhen t e pulp is de ivered by the trough, C, and is caused to adherethereto by the action of the suction beneath the felt, an additionallayer is placed thereon when the trough C is reached by the travelingfelt, and shortly thereafter a thirdlayer of pulp is upon felt, nor amthickness desired, which board may have its layers differing in color.

When desired a roller, N, may be placed above the felt, E, to engage thepulp immediately after it is delivefed to the felt, as shown in Fig. 5.

By my invention piaper is made in which there are no wire ma s tobe'oblit'erated and the texture of the paper is tenacious and strong.

I am not aware that heertofore the Fourdrinier type of pa er has everbeen made aware that in a cylinder machine, or means for making paper ormanufacturing pulp by the cylinder method, that pulp has been deliveredto the felt except by the felt picking it from a cylinder having a wirecloth pulp carrying surface.

By my invention I have provided a means for making the strongest kind ofpaper in a very simple and inexpensive manner.

It will be noted that I can supply to the paper what is commonly knownas the water mark, which is done by the dandy roll, H engaging the pulpon the felt, E. Water marks could not. heretofore be placed upon papermade by cylinder type of machine.

What I claim as my invention and desire to secure by Letters Patentis 1. In a paper making machine, a flow box; a trough; a means for a'tating the pulp in said trough; a traveling elt upon whlch said pulwhile in an agitated condltion is deposited from said trough; a'meansfor exerting suction upon the ulp immediately upon its delivery to thefe t, from beneath the felt, substantially as described.

2. The combination of a traveling felt; a trough mounted at an angle tosaid felt; means for delivering pul to said trough; a means forregulating the f ow of pulp throu h said trough; a means for agitatingthe pu p emitted through said trough at the time of its emission; ameans for exerting suction upon the pulp at the time of its deliverydelivered on the felt from said trough.

, 3. The combination of an endless woven cloth; a trough mounted at anangle to said cloth; means for delivering pul to said trough; a meansfor regulating t 1e flow of the opening of sai gers attached to saidreclprocating bar and.

pulp through said trough; a means for exert- 1n suctlon upon the pulp atthe time of its de ivery to said cloth, substantially as described.

4. The combination of a flow box; a trough; a bar ada ted to reciprocatenear trough; a series of finan endless woven cloth adapted to receivethe contents of said trough. a I

I 5.- In a machine for making millboard and similar substances, thecombination of a pair of ress-rolls, a series of suction-boxes, an eness band of felt passing over said suctionboxes and through said rollsand means for initially depositing a dilute mixture of pulped fiber andcement on the upper section of said endless felt.

6. In a machine for making millboard and similar substances, thecombination of a pair of press-rolls, a series of guide-rolls, anendless band of felt passing over said guiderolls, and through saidpress-rolls, and means for initially depositing a dilute mixture ofpulped fiber and cement on the upper section of said endless felt,together with a distributing-roll located over the felt near the pointwhere the material is delivered to it.

7. In a machine for making millboard and similar substances, thecombination of a pair of press-rolls, a series of guide-rolls, anendless band of felt assing over said guide-rolls and through saipress-rolls and means for initially de ositing a dilute mixture ofpulped fiber and er on the upper section of said endless felt, togetherwith a distributing-roll located over the felt near the point where thematerial is delivered to it, said roll revolving in a direction toproduce circumferential travel on its under side 0 posite to the travelof the felt at the point of contact therewith. 8. The combination of apair of press rolls; a series of guide rolls; an endless band of feltpassing over said guide rolls and through said press rolls; a means forinitially depositing a dilute mixture of pulped fiber on the outersection of said endless felt; a series of suction boxes over which saidendless band asses.

In testimony whereof I have a ed my signature in presence of twowitnesses.

WILLIAM E. SHEEHAN.

Witnesses:

FREDERICK W. CAMERON, Lorrnn PRIOR.

